Invar 36 4J36 soft magnetic alloy steel strip bars alibaba china

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$17.77 - $27.77 / Kilograms | 100 Kilogram/Kilograms Can be negotiated (Min. Order)
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Overview
Quick Details
Place of Origin:
Liaoning, China (Mainland)
Brand Name:
DLDT
Model Number:
4J36
Application:
General used in extremely low coefficient of expansion of environment
Shape:
strip,sheet. bars
Material:
FeNi36
Dimensions:
round
Chemical Composition:
Ni Fe base
Surface:
Siliver
Supply Ability
Supply Ability:
20000 Ton/Tons per Year
Packaging & Delivery
Packaging Details
Usually in wooden case or according to your request
Port
Dalian,China
Lead Time :
Shipped in 35 days after payment

Invar 36 sheet FeNi36 4J36 soft magnetic alloy wholesale alibaba china 

 

 

Product Description

 Chemical composition of Invar 36

Element

Min

Max

Carbon

--

0.15

Nickel

36.0 nominal

Phosphorus

--

0.006

Iron

Balance

Silicon

--

0.40

Manganese

--

0.60

Sulfur

--

0.004

Chromium

--

0.25

Cobalt

--

0.50

Description of invar 36

Invar 36 is a 36% nickel-iron alloy possessing a rate of thermal expansion approximately one-tenth that of carbonsteel at temperatures up to 400°F(204°C)

Applications of invar 36

This alloy has been used for applications where dimensional changes due to temperature variation must be minimized such as in radio and electronic devices, aircraft controls, optical and laser system, etc.Invar 36alloyhas also been used in conjunction with high expansion alloys in applications where a motion is desired when thetemperature changes, such as in bimetallic thermostats and in rod and tube assemblies for temperature regulators.

Physical Properties

Specific gravity ................ 8.05
Density
lb/cu in ......................... 0.291
kg/cu m ......................... 8055
Thermal conductivity
Btu-in/ft²/hr/°F ................ 72.6
W/m þ K .......................... 10.5

Electrical resistivity
ohm-cir mil/ft ................... 495
microhm-mm ...................... 820
Temperature coefficient of electrical
resistivity
per °F (70/212°F) ............. 0.0006
per °C (21/100°C) ............. 0.0011

 

Mean coefficient of thermal expansion

 

Temperature

Coefficient

°F

°C

in/in/°F x 10(-6)

cm/cm/°C x 10(-6)

200
300
500
700

93
149
260
371

0.72
1.17
2.32
4.22

1.30
2.11
4.18
7.60

 

 

Curie temperature
  °F ............................................................................................. 535
  °C ............................................................................................. 279
Melt point
  °F ........................................................................................... 2600
  °C ........................................................................................... 1427
Specific Heat
  Btu/lb þ°F ............................................................................. 0.123
  kJ/kg þK ................................................................................ 0.515
Modulus of elasticity
Cold Rolled Strip    Annealed Bar and Strip
psi x 10(6)........... 21.5........................... 20.5
MPa x 10(3) ....... 148 .......................... 141

Heat Treatment

Proper heat treatment is critical to ensure that Invar 36 remains in a low internal stress condition both throughout fabrication and during the service life of the tool. 
Recommended heat treatment parameters are shown in table below

 

Note:

A. For plate thickness over 1.00", modify the heat treatment time at temperature.
Add one hour per additional inch of thickness. Example: 5 hrs at 600°F require to stress relieve anneal 4.00"
thick plate.

B. Invar 36 will develop oxidation scale that increases as both heat treatment time and temperature increase. For applications where sand blasting is not an available process, a controlled atmospheric heat treatment oven will be required.

C. Invar 36 must be free of surface contaminants and cleaned before heat treatment.

D. Thermally inducted tool distortion can be minimized by controlling heat up and cool down during full anneal heat treatment. During heat up, first stabilize the tool at 500°F and then increase by 50°F per hour to full anneal temperature. During cool down, decrease the temperature by 50°F per hour until temperature of the tool is below 600°F. For tools exceeding 8 feet in length, weights may be added to the ends and/or center of the tool as required to further assist in maintaining contour.

 

 

Workability

 

Forging
The principal precaution to observe in forging is to heat quickly and avoid soaking in the furnace. Long soaking may result in a checked surface due to absorption of sulfur from the furnace atmosphere and/or oxide penetration. A forging temperature of 2000/2150°F is preferred.

 

Coolant
It is important to control heat build up, the major cause of warpage. A suggested coolant would be Cool Tool. Cool Tool contains fatty esters to reduce friction in the cutting zone and a refrigerant to remove the heat generated by friction between the cutting tool and work place.

 

Tooling
T-15 Alloy, such as Vasco Supreme-manufactured by Vanadium Alloys Company. M-3 Type 2, such as Van Cut Type 2-manufactured by Vanadium Alloys Company. Congo manufactured by Braeburn.
For machining with carbide tools, a K-6 manufactured by Kennemetal, Firthie HA manufactured by Firth Sterling, or #370 Carboloy could be used, or a K2S manufactured by Kennemetal, or Firthie T-04 manufactured by Firth Sterling would be satisfactory. One thing of prime importance is that all feathered or wire edges should be removed from the tools. They should be kept in excellent condition by repeated inspection.

 

Turning
If steel cutting tools are used, try a feed of approximately .010" to .012" per revolution and a speed as high as 35/FPM could probably be attained. Some of the angels on the cutting tools would be as follows:

 

  • End cutting edge angle -Approximately 7°

  • Nose radius -Approximately .005"

  • Side cutting edge angle -Approximately 15°

  • Back rake -Approximately 8°

  • Side rake -Approximately 8°

 

When cutting off high speed tools are better than carbide tools, and a feed of approximately .001" per revolution should be used. The cutting tools should have a front clearance of about 7° and a fairly big tip--larger than 25° would be helpful.

 

Welding
Invar 36 can be welded by the convetional methods. Caution must be taken so as not to overheat the molten metal. This will avoid spattering of the molten metal and pits in the welded area. When filler rod is required , Invarod has been used.

 

Drilling
When drilling a 3/16" diameter hole, a speed of about 40/FPM could possibly be used, and the feed should be about .002" to .0025" per revolution, for a 1/2" hole, approximately the same speed could be used with a feed of about .004" to .005" per revolution. The drills should be as short as possible, and it is desirable to make a thin web at the point by conventional methods. By conventional methods, we mean do not notch or make a crank shaft grinding. It is suggested that heavy web type drills with nitrided or electrolyzed surfaces be used. The hole, of course, should be cleaned frequently in order to remove the chips, which will gall, and also for cooling. The drill should be ground to an included point angle of 118° to 120°

 

Reaming
Reaming speeds should be haft the drill speed, but the feed should be about three times the drill speed. It is suggested that the margin on the land should be about .005" to .010", and that the chamfer should be .005" to .010" and the chamfer angle about 30°. The tools should be as short as possible, and have a slight face rake of about 5° to 8°.

 

Tapping
In tapping, a tap drill slightly larger than the standard drill recommended for conventional threads should be used, because the metal will probably flow into the cut. It is suggested that on automatic machines, a two or three fluted tapping tool should be used. For taps below 3/16", the two fluted would be best. Grind the face hook angle to 8° to 10°, and the tap should have a .003" to .005" chamfered edge. If possible, if binding occurs in the hole in tapping, the width of the land may be too great, and it is suggested that the width of the heel be ground down. Again, it is suggested that nitrided or electrolyzed tools be used. Speed should be about 20/FPM.

 

High Speed Tool*

Turning
And
Forming

Cut-Off
Tool

1/16"

SFM
FEED

65
.0010

1/8"

SFM
FEED

67
.0012

1/4"

SFM
FEED

69
.0016

Tool
Width

1/2"

SFM
FEED

67
.0012

1"

SFM
FEED

63
.0010

1-1/2"

SFM
FEED

63
.0009

Drilling

Drill
Dia.

3/8"

SFM
FEED

43
.0030

3/4"

SFM
FEED

45
.0036

Reaming

Under 1/2"

SFM
FEED

57
.003

Over 1/2"

SFM
FEED

57
.0045

Threading

T.P.I

3-7½
8-15

SFM
SFM

8
10

Over 16

SFM

16

Tapping

T.P.I

3-7½
8-15
16-24

SFM
SFM
SFM

6
7
11

Over 25

SFM

16

Milling

 

SFM
FEED

35-70
.002-.005

Broaching

 

SFM
FEED

8-12
.001-.005

Turning
Single Point
& Box Tools

High Speed Tools

SFM
FEED

60-65
.0029-.0043

Carbide Tools

SFM
FEED

160-215
.025-.080

 

  • When using carbide tools, surface speed feet/minute (SFM) can be increased between 2 and 3 times over the high speed suggestions. Feeds can be increased between 50 and 100%.

  • Note: Figures used for all metal removal operations covered are average. On certain work, the nature of the part may require adjustment of speeds and feeds. Each job has to be developed for best production results with optimum tool life. Speeds or feeds should be increased or decreased in small steps.

  • The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes.

FAQ

 

1  Q:What's the payment term?

   A:T/T 30% for downpayment,Then T/T balance on the actual weight of ready for shipment products 

   on the basis of the Seller's account.

 

2  Q: How to ensure your products is qualified?

    A: The Quantity and weight of product are certified by the seller’s Inspection Certificate and the     

    quality is certified by the Mill Taste Certificate agreed form.

 

3  Q: How to confirm the Acceptance of Goods and Quality Control? 

    A:Once the manufacturing of a batch is complete,two samples will be acquired at random by the

    buyer'srepresentatives for testing at independent labs. One sample will be sent to a lab in 

    Seller’s country and the other sample to a lab in buyer’s country. 

 

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